Find the missing angle and round your answer to the nearest tenth.11.2B

The given diagram is a right angled triangle.
To make it obvious, It can be redrawn as:
From the right angled triangle:
Opposite = 9
Hypotenuse = 11.2
θ = unknown
Using the formula:
[tex]\begin{gathered} \sin \theta=\text{ }\frac{Opposite}{\text{Hypotenuse}} \\ \sin \theta=\text{ }\frac{9}{11.2} \\ \sin \theta=\text{ }0.804 \\ \theta=\text{ }\sin ^{-1}0.804 \\ \theta\text{ = }53.5^0 \end{gathered}[/tex]